Mr Rees-Mogg quotes the shocking statistic that air pollution contributes to 40,000 premature deaths each year in the UK “primarily caused by nitrous oxides that are produced by diesel engines”. Nitrous oxide (N2O) is of course laughing gas (dephlogisticated nitrous air to Mr Rees-Mogg), rather than nitrogen dioxide (NO2) which is produced by diesel engines and gas boilers and which causes harmful air pollution.

The policy of promoting diesel over petrol engines was a well intentioned but bad policy based on bad information and lobbying by the car manufacturers. Mr Rees-Mogg blames an “EU green agenda” rather than the criminal actions of the car industryor the lack of regulatory enforcement by national governments, including the UK. The EU isthreatening to fine the UK for being in breach of its NO2 limits since 2010, not the other way around.

The motivation behind the switch from petrol to diesel was to reduce CO2 emissions from petrol engines in order to mitigate global climate change – on the basis that companies such as VW were not knowingly cheating the system, which they were.

Mr Rees-Mogg says “The policy was determined because of fears about carbon dioxide emissions and an agreement made across the European Union to reduce them. Petrol creates more carbon dioxide than diesel engines but carbon dioxide does not lead to serious health complaints, indeed it is perfectly safe as a background atmospheric gas for people to breath”.

In these two sentences Mr Rees-Mogg has constructed a logical fallacy that says – because carbon dioxide is not toxic it is therefore harmless, so we shouldn’t be concerned about it and producing more is not an issue. This meme, which is often used by the fossil fuel lobby to misinform, detracts from the real issue which is that emissions from burning fossil fuels, including both diesel and petrol, is a very serious problem that both kills people through air pollution and which is dangerously disrupting the Earth’s climate.

“Given that fossil fuel combustion is a major source of both greenhouse gases and local air pollutants, if action is taken to address climate change there could be major improvements in outdoor air quality as a result of decarbonisation of power and transport systems, and improved efficiency of energy use. Indeed, the economic benefits of improved health resulting from reduced exposure to fine particles and other local and regional air pollutants as a consequence of climate policies have been estimated to be sufficient, on their own (ie without reference to climate benefits), to justify a range of climate actions being adopted”.

Neither air pollution nor climate change are laughing matters and their solutions lie in both strong environmental regulation and leaving fossil fuels in the ground – two things Mr Rees-Mogg is not the slightest bit interested in.